WebSVN – HelenOS – Diff – /tags/0.2.0.1/kernel/arch/ia64/include/mm/page.h


/*
 * Copyright (C) 2005 - 2006 Jakub Jermar
 * Copyright (C) 2006 Jakub Vana
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifndef __ia64_PAGE_H__
#define __ia64_PAGE_H__
 
#include <arch/mm/frame.h>
 
#define PAGE_SIZE   FRAME_SIZE
#define PAGE_WIDTH  FRAME_WIDTH
 
 
#ifdef KERNEL
 
/** Bit width of the TLB-locked portion of kernel address space. */
#define KERNEL_PAGE_WIDTH   28  /* 256M */
 
#define PPN_SHIFT           12
 
#define VRN_SHIFT           61
#define VRN_MASK            (7LL << VRN_SHIFT)
#define VA2VRN(va)          ((va)>>VRN_SHIFT)
 
#ifdef __ASM__
#define VRN_KERNEL          7
#else
#define VRN_KERNEL          7LL
#endif
 
#define REGION_REGISTERS        8
 
#define KA2PA(x)    ((__address) (x-(VRN_KERNEL<<VRN_SHIFT)))
#define PA2KA(x)    ((__address) (x+(VRN_KERNEL<<VRN_SHIFT)))
 
#define VHPT_WIDTH          20          /* 1M */
#define VHPT_SIZE           (1 << VHPT_WIDTH)
 
#define PTA_BASE_SHIFT          15
 
/** Memory Attributes. */
#define MA_WRITEBACK    0x0
#define MA_UNCACHEABLE  0x4
 
/** Privilege Levels. Only the most and the least privileged ones are ever used. */
#define PL_KERNEL   0x0
#define PL_USER     0x3
 
/* Access Rigths. Only certain combinations are used by the kernel. */
#define AR_READ     0x0
#define AR_EXECUTE  0x1
#define AR_WRITE    0x2
 
#ifndef __ASM__
 
#include <arch/mm/frame.h>
#include <arch/barrier.h>
#include <genarch/mm/page_ht.h>
#include <arch/mm/asid.h>
#include <arch/types.h>
#include <typedefs.h>
#include <debug.h>
 
struct vhpt_tag_info {
    unsigned long long tag : 63;
    unsigned ti : 1;
} __attribute__ ((packed));
 
union vhpt_tag {
    struct vhpt_tag_info tag_info;
    unsigned tag_word;
};
 
struct vhpt_entry_present {
    /* Word 0 */
    unsigned p : 1;
    unsigned : 1;
    unsigned ma : 3;
    unsigned a : 1;
    unsigned d : 1;
    unsigned pl : 2;
    unsigned ar : 3;
    unsigned long long ppn : 38;
    unsigned : 2;
    unsigned ed : 1;
    unsigned ig1 : 11;
   
    /* Word 1 */
    unsigned : 2;
    unsigned ps : 6;
    unsigned key : 24;
    unsigned : 32;
   
    /* Word 2 */
    union vhpt_tag tag;
   
    /* Word 3 */                                                   
    __u64 ig3 : 64;
} __attribute__ ((packed));
 
struct vhpt_entry_not_present {
    /* Word 0 */
    unsigned p : 1;
    unsigned long long ig0 : 52;
    unsigned ig1 : 11;
   
    /* Word 1 */
    unsigned : 2;
    unsigned ps : 6;
    unsigned long long ig2 : 56;
 
    /* Word 2 */
    union vhpt_tag tag;
   
    /* Word 3 */                                                   
    __u64 ig3 : 64;
} __attribute__ ((packed));
 
typedef union vhpt_entry {
    struct vhpt_entry_present present;
    struct vhpt_entry_not_present not_present;
    __u64 word[4];
} vhpt_entry_t;
 
struct region_register_map {
    unsigned ve : 1;
    unsigned : 1;
    unsigned ps : 6;
    unsigned rid : 24;
    unsigned : 32;
} __attribute__ ((packed));
 
typedef union region_register {
    struct region_register_map map;
    unsigned long long word;
} region_register;
 
struct pta_register_map {
    unsigned ve : 1;
    unsigned : 1;
    unsigned size : 6;
    unsigned vf : 1;
    unsigned : 6;
    unsigned long long base : 49;
} __attribute__ ((packed));
 
typedef union pta_register {
    struct pta_register_map map;
    __u64 word;
} pta_register;
 
/** Return Translation Hashed Entry Address.
 *
 * VRN bits are used to read RID (ASID) from one
 * of the eight region registers registers.
 *
 * @param va Virtual address including VRN bits.
 *
 * @return Address of the head of VHPT collision chain.
 */
static inline __u64 thash(__u64 va)
{
    __u64 ret;
 
    __asm__ volatile ("thash %0 = %1\n" : "=r" (ret) : "r" (va));
 
    return ret;
}
 
/** Return Translation Hashed Entry Tag.
 *
 * VRN bits are used to read RID (ASID) from one
 * of the eight region registers.
 *
 * @param va Virtual address including VRN bits.
 *
 * @return The unique tag for VPN and RID in the collision chain returned by thash().
 */
static inline __u64 ttag(__u64 va)
{
    __u64 ret;
 
    __asm__ volatile ("ttag %0 = %1\n" : "=r" (ret) : "r" (va));
 
    return ret;
}
 
/** Read Region Register.
 *
 * @param i Region register index.
 *
 * @return Current contents of rr[i].
 */
static inline __u64 rr_read(index_t i)
{
    __u64 ret;
    ASSERT(i < REGION_REGISTERS);
    __asm__ volatile ("mov %0 = rr[%1]\n" : "=r" (ret) : "r" (i << VRN_SHIFT));
    return ret;
}
 
/** Write Region Register.
 *
 * @param i Region register index.
 * @param v Value to be written to rr[i].
 */
static inline void rr_write(index_t i, __u64 v)
{
    ASSERT(i < REGION_REGISTERS);
    __asm__ volatile (
        "mov rr[%0] = %1\n"
        :
        : "r" (i << VRN_SHIFT), "r" (v)
    );
}
 
/** Read Page Table Register.
 *
 * @return Current value stored in PTA.
 */
static inline __u64 pta_read(void)
{
    __u64 ret;
   
    __asm__ volatile ("mov %0 = cr.pta\n" : "=r" (ret));
   
    return ret;
}
 
/** Write Page Table Register.
 *
 * @param v New value to be stored in PTA.
 */
static inline void pta_write(__u64 v)
{
    __asm__ volatile ("mov cr.pta = %0\n" : : "r" (v));
}
 
extern void page_arch_init(void);
 
extern vhpt_entry_t *vhpt_hash(__address page, asid_t asid);
extern bool vhpt_compare(__address page, asid_t asid, vhpt_entry_t *v);
extern void vhpt_set_record(vhpt_entry_t *v, __address page, asid_t asid, __address frame, int flags);
 
#endif /* __ASM__ */
 
#endif /* KERNEL */
 
#endif
 

Rev 1965	Rev 1968
1	/*	1	/*
2	* Copyright (C) 2005 - 2006 Jakub Jermar	2	* Copyright (C) 2005 - 2006 Jakub Jermar
3	* Copyright (C) 2006 Jakub Vana	3	* Copyright (C) 2006 Jakub Vana
4	* All rights reserved.	4	* All rights reserved.
5	*	5	*
6	* Redistribution and use in source and binary forms, with or without	6	* Redistribution and use in source and binary forms, with or without
7	* modification, are permitted provided that the following conditions	7	* modification, are permitted provided that the following conditions
8	* are met:	8	* are met:
9	*	9	*
10	* - Redistributions of source code must retain the above copyright	10	* - Redistributions of source code must retain the above copyright
11	* notice, this list of conditions and the following disclaimer.	11	* notice, this list of conditions and the following disclaimer.
12	* - Redistributions in binary form must reproduce the above copyright	12	* - Redistributions in binary form must reproduce the above copyright
13	* notice, this list of conditions and the following disclaimer in the	13	* notice, this list of conditions and the following disclaimer in the
14	* documentation and/or other materials provided with the distribution.	14	* documentation and/or other materials provided with the distribution.
15	* - The name of the author may not be used to endorse or promote products	15	* - The name of the author may not be used to endorse or promote products
16	* derived from this software without specific prior written permission.	16	* derived from this software without specific prior written permission.
17	*	17	*
18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	28	*/
29		29
30	#ifndef __ia64_PAGE_H__	30	#ifndef __ia64_PAGE_H__
31	#define __ia64_PAGE_H__	31	#define __ia64_PAGE_H__
32		32
33	#include <arch/mm/frame.h>	33	#include <arch/mm/frame.h>
34		34
35	#define PAGE_SIZE FRAME_SIZE	35	#define PAGE_SIZE FRAME_SIZE
36	#define PAGE_WIDTH FRAME_WIDTH	36	#define PAGE_WIDTH FRAME_WIDTH
37		37
38		38
39	#ifdef KERNEL	39	#ifdef KERNEL
40		40
41	/** Bit width of the TLB-locked portion of kernel address space. */	41	/** Bit width of the TLB-locked portion of kernel address space. */
42	#define KERNEL_PAGE_WIDTH 28 /* 256M */	42	#define KERNEL_PAGE_WIDTH 28 /* 256M */
43		43
44	#define PPN_SHIFT 12	44	#define PPN_SHIFT 12
45		45
46	#define VRN_SHIFT 61	46	#define VRN_SHIFT 61
47	#define VRN_MASK (7LL << VRN_SHIFT)	47	#define VRN_MASK (7LL << VRN_SHIFT)
48	#define VA2VRN(va) ((va)>>VRN_SHIFT)	48	#define VA2VRN(va) ((va)>>VRN_SHIFT)
49		49
50	#ifdef __ASM__	50	#ifdef __ASM__
51	#define VRN_KERNEL 7	51	#define VRN_KERNEL 7
52	#else	52	#else
53	#define VRN_KERNEL 7LL	53	#define VRN_KERNEL 7LL
54	#endif	54	#endif
55		55
56	#define REGION_REGISTERS 8	56	#define REGION_REGISTERS 8
57		57
58	#define KA2PA(x) ((__address) (x-(VRN_KERNEL<<VRN_SHIFT)))	58	#define KA2PA(x) ((__address) (x-(VRN_KERNEL<<VRN_SHIFT)))
59	#define PA2KA(x) ((__address) (x+(VRN_KERNEL<<VRN_SHIFT)))	59	#define PA2KA(x) ((__address) (x+(VRN_KERNEL<<VRN_SHIFT)))
60		60
61	#define VHPT_WIDTH 20 /* 1M */	61	#define VHPT_WIDTH 20 /* 1M */
62	#define VHPT_SIZE (1 << VHPT_WIDTH)	62	#define VHPT_SIZE (1 << VHPT_WIDTH)
63		63
64	#define PTA_BASE_SHIFT 15	64	#define PTA_BASE_SHIFT 15
65		65
66	/** Memory Attributes. */	66	/** Memory Attributes. */
67	#define MA_WRITEBACK 0x0	67	#define MA_WRITEBACK 0x0
68	#define MA_UNCACHEABLE 0x4	68	#define MA_UNCACHEABLE 0x4
69		69
70	/** Privilege Levels. Only the most and the least privileged ones are ever used. */	70	/** Privilege Levels. Only the most and the least privileged ones are ever used. */
71	#define PL_KERNEL 0x0	71	#define PL_KERNEL 0x0
72	#define PL_USER 0x3	72	#define PL_USER 0x3
73		73
74	/* Access Rigths. Only certain combinations are used by the kernel. */	74	/* Access Rigths. Only certain combinations are used by the kernel. */
75	#define AR_READ 0x0	75	#define AR_READ 0x0
76	#define AR_EXECUTE 0x1	76	#define AR_EXECUTE 0x1
77	#define AR_WRITE 0x2	77	#define AR_WRITE 0x2
78		78
79	#ifndef __ASM__	79	#ifndef __ASM__
80		80
81	#include <arch/mm/frame.h>	81	#include <arch/mm/frame.h>
82	#include <arch/barrier.h>	82	#include <arch/barrier.h>
83	#include <genarch/mm/page_ht.h>	83	#include <genarch/mm/page_ht.h>
84	#include <arch/mm/asid.h>	84	#include <arch/mm/asid.h>
85	#include <arch/types.h>	85	#include <arch/types.h>
86	#include <typedefs.h>	86	#include <typedefs.h>
87	#include <debug.h>	87	#include <debug.h>
88		88
89	struct vhpt_tag_info {	89	struct vhpt_tag_info {
90	unsigned long long tag : 63;	90	unsigned long long tag : 63;
91	unsigned ti : 1;	91	unsigned ti : 1;
92	} __attribute__ ((packed));	92	} __attribute__ ((packed));
93		93
94	union vhpt_tag {	94	union vhpt_tag {
95	struct vhpt_tag_info tag_info;	95	struct vhpt_tag_info tag_info;
96	unsigned tag_word;	96	unsigned tag_word;
97	};	97	};
98		98
99	struct vhpt_entry_present {	99	struct vhpt_entry_present {
100	/* Word 0 */	100	/* Word 0 */
101	unsigned p : 1;	101	unsigned p : 1;
102	unsigned : 1;	102	unsigned : 1;
103	unsigned ma : 3;	103	unsigned ma : 3;
104	unsigned a : 1;	104	unsigned a : 1;
105	unsigned d : 1;	105	unsigned d : 1;
106	unsigned pl : 2;	106	unsigned pl : 2;
107	unsigned ar : 3;	107	unsigned ar : 3;
108	unsigned long long ppn : 38;	108	unsigned long long ppn : 38;
109	unsigned : 2;	109	unsigned : 2;
110	unsigned ed : 1;	110	unsigned ed : 1;
111	unsigned ig1 : 11;	111	unsigned ig1 : 11;
112		112
113	/* Word 1 */	113	/* Word 1 */
114	unsigned : 2;	114	unsigned : 2;
115	unsigned ps : 6;	115	unsigned ps : 6;
116	unsigned key : 24;	116	unsigned key : 24;
117	unsigned : 32;	117	unsigned : 32;
118		118
119	/* Word 2 */	119	/* Word 2 */
120	union vhpt_tag tag;	120	union vhpt_tag tag;
121		121
122	/* Word 3 */	122	/* Word 3 */
123	__u64 ig3 : 64;	123	__u64 ig3 : 64;
124	} __attribute__ ((packed));	124	} __attribute__ ((packed));
125		125
126	struct vhpt_entry_not_present {	126	struct vhpt_entry_not_present {
127	/* Word 0 */	127	/* Word 0 */
128	unsigned p : 1;	128	unsigned p : 1;
129	unsigned long long ig0 : 52;	129	unsigned long long ig0 : 52;
130	unsigned ig1 : 11;	130	unsigned ig1 : 11;
131		131
132	/* Word 1 */	132	/* Word 1 */
133	unsigned : 2;	133	unsigned : 2;
134	unsigned ps : 6;	134	unsigned ps : 6;
135	unsigned long long ig2 : 56;	135	unsigned long long ig2 : 56;
136		136
137	/* Word 2 */	137	/* Word 2 */
138	union vhpt_tag tag;	138	union vhpt_tag tag;
139		139
140	/* Word 3 */	140	/* Word 3 */
141	__u64 ig3 : 64;	141	__u64 ig3 : 64;
142	} __attribute__ ((packed));	142	} __attribute__ ((packed));
143		143
144	typedef union vhpt_entry {	144	typedef union vhpt_entry {
145	struct vhpt_entry_present present;	145	struct vhpt_entry_present present;
146	struct vhpt_entry_not_present not_present;	146	struct vhpt_entry_not_present not_present;
147	__u64 word[4];	147	__u64 word[4];
148	} vhpt_entry_t;	148	} vhpt_entry_t;
149		149
150	struct region_register_map {	150	struct region_register_map {
151	unsigned ve : 1;	151	unsigned ve : 1;
152	unsigned : 1;	152	unsigned : 1;
153	unsigned ps : 6;	153	unsigned ps : 6;
154	unsigned rid : 24;	154	unsigned rid : 24;
155	unsigned : 32;	155	unsigned : 32;
156	} __attribute__ ((packed));	156	} __attribute__ ((packed));
157		157
158	typedef union region_register {	158	typedef union region_register {
159	struct region_register_map map;	159	struct region_register_map map;
160	unsigned long long word;	160	unsigned long long word;
161	} region_register;	161	} region_register;
162		162
163	struct pta_register_map {	163	struct pta_register_map {
164	unsigned ve : 1;	164	unsigned ve : 1;
165	unsigned : 1;	165	unsigned : 1;
166	unsigned size : 6;	166	unsigned size : 6;
167	unsigned vf : 1;	167	unsigned vf : 1;
168	unsigned : 6;	168	unsigned : 6;
169	unsigned long long base : 49;	169	unsigned long long base : 49;
170	} __attribute__ ((packed));	170	} __attribute__ ((packed));
171		171
172	typedef union pta_register {	172	typedef union pta_register {
173	struct pta_register_map map;	173	struct pta_register_map map;
174	__u64 word;	174	__u64 word;
175	} pta_register;	175	} pta_register;
176		176
177	/** Return Translation Hashed Entry Address.	177	/** Return Translation Hashed Entry Address.
178	*	178	*
179	* VRN bits are used to read RID (ASID) from one	179	* VRN bits are used to read RID (ASID) from one
180	* of the eight region registers registers.	180	* of the eight region registers registers.
181	*	181	*
182	* @param va Virtual address including VRN bits.	182	* @param va Virtual address including VRN bits.
183	*	183	*
184	* @return Address of the head of VHPT collision chain.	184	* @return Address of the head of VHPT collision chain.
185	*/	185	*/
186	static inline __u64 thash(__u64 va)	186	static inline __u64 thash(__u64 va)
187	{	187	{
188	__u64 ret;	188	__u64 ret;
189		189
190	__asm__ volatile ("thash %0 = %1\n" : "=r" (ret) : "r" (va));	190	__asm__ volatile ("thash %0 = %1\n" : "=r" (ret) : "r" (va));
191		191
192	return ret;	192	return ret;
193	}	193	}
194		194
195	/** Return Translation Hashed Entry Tag.	195	/** Return Translation Hashed Entry Tag.
196	*	196	*
197	* VRN bits are used to read RID (ASID) from one	197	* VRN bits are used to read RID (ASID) from one
198	* of the eight region registers.	198	* of the eight region registers.
199	*	199	*
200	* @param va Virtual address including VRN bits.	200	* @param va Virtual address including VRN bits.
201	*	201	*
202	* @return The unique tag for VPN and RID in the collision chain returned by thash().	202	* @return The unique tag for VPN and RID in the collision chain returned by thash().
203	*/	203	*/
204	static inline __u64 ttag(__u64 va)	204	static inline __u64 ttag(__u64 va)
205	{	205	{
206	__u64 ret;	206	__u64 ret;
207		207
208	__asm__ volatile ("ttag %0 = %1\n" : "=r" (ret) : "r" (va));	208	__asm__ volatile ("ttag %0 = %1\n" : "=r" (ret) : "r" (va));
209		209
210	return ret;	210	return ret;
211	}	211	}
212		212
213	/** Read Region Register.	213	/** Read Region Register.
214	*	214	*
215	* @param i Region register index.	215	* @param i Region register index.
216	*	216	*
217	* @return Current contents of rr[i].	217	* @return Current contents of rr[i].
218	*/	218	*/
219	static inline __u64 rr_read(index_t i)	219	static inline __u64 rr_read(index_t i)
220	{	220	{
221	__u64 ret;	221	__u64 ret;
222	ASSERT(i < REGION_REGISTERS);	222	ASSERT(i < REGION_REGISTERS);
223	__asm__ volatile ("mov %0 = rr[%1]\n" : "=r" (ret) : "r" (i << VRN_SHIFT));	223	__asm__ volatile ("mov %0 = rr[%1]\n" : "=r" (ret) : "r" (i << VRN_SHIFT));
224	return ret;	224	return ret;
225	}	225	}
226		226
227	/** Write Region Register.	227	/** Write Region Register.
228	*	228	*
229	* @param i Region register index.	229	* @param i Region register index.
230	* @param v Value to be written to rr[i].	230	* @param v Value to be written to rr[i].
231	*/	231	*/
232	static inline void rr_write(index_t i, __u64 v)	232	static inline void rr_write(index_t i, __u64 v)
233	{	233	{
234	ASSERT(i < REGION_REGISTERS);	234	ASSERT(i < REGION_REGISTERS);
235	__asm__ volatile (	235	__asm__ volatile (
236	"mov rr[%0] = %1\n"	236	"mov rr[%0] = %1\n"
237	:	237	:
238	: "r" (i << VRN_SHIFT), "r" (v)	238	: "r" (i << VRN_SHIFT), "r" (v)
239	);	239	);
240	}	240	}
241		241
242	/** Read Page Table Register.	242	/** Read Page Table Register.
243	*	243	*
244	* @return Current value stored in PTA.	244	* @return Current value stored in PTA.
245	*/	245	*/
246	static inline __u64 pta_read(void)	246	static inline __u64 pta_read(void)
247	{	247	{
248	__u64 ret;	248	__u64 ret;
249		249
250	__asm__ volatile ("mov %0 = cr.pta\n" : "=r" (ret));	250	__asm__ volatile ("mov %0 = cr.pta\n" : "=r" (ret));
251		251
252	return ret;	252	return ret;
253	}	253	}
254		254
255	/** Write Page Table Register.	255	/** Write Page Table Register.
256	*	256	*
257	* @param v New value to be stored in PTA.	257	* @param v New value to be stored in PTA.
258	*/	258	*/
259	static inline void pta_write(__u64 v)	259	static inline void pta_write(__u64 v)
260	{	260	{
261	__asm__ volatile ("mov cr.pta = %0\n" : : "r" (v));	261	__asm__ volatile ("mov cr.pta = %0\n" : : "r" (v));
262	}	262	}
263		263
264	extern void page_arch_init(void);	264	extern void page_arch_init(void);
265		265
266	extern vhpt_entry_t *vhpt_hash(__address page, asid_t asid);	266	extern vhpt_entry_t *vhpt_hash(__address page, asid_t asid);
267	extern bool vhpt_compare(__address page, asid_t asid, vhpt_entry_t *v);	267	extern bool vhpt_compare(__address page, asid_t asid, vhpt_entry_t *v);
268	extern void vhpt_set_record(vhpt_entry_t *v, __address page, asid_t asid, __address frame, int flags);	268	extern void vhpt_set_record(vhpt_entry_t *v, __address page, asid_t asid, __address frame, int flags);
269		269
270	#endif /* __ASM__ */	270	#endif /* __ASM__ */
271		271
272	#endif /* KERNEL */	272	#endif /* KERNEL */
273		273
274	#endif	274	#endif
275		275

Subversion Repositories HelenOS

(root)/tags/0.2.0.1/kernel/arch/ia64/include/mm/page.h – Rev 1965 → 1968